The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 26, 2010
Filed:
Nov. 03, 2004
Michelle L. Hudack, Grand Blanc, MI (US);
Wanglin Yu, Midland, MI (US);
Michael Inbasekaran, Palatine, IL (US);
Weishi Wu, Midland, MI (US);
Dean M. Welsh, Midland, MI (US);
James J. O'brien, Midland, MI (US);
Michelle L. Hudack, Grand Blanc, MI (US);
Wanglin Yu, Midland, MI (US);
Michael Inbasekaran, Palatine, IL (US);
Weishi Wu, Midland, MI (US);
Dean M. Welsh, Midland, MI (US);
James J. O'Brien, Midland, MI (US);
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A halogenated bisdiarylaminopolycyclic aromatic compound, polymers made therefrom, and polymeric light emitting diode devices using the polymers are described. The halogenated compound is represented by formula (I), wherein Ar and Ar' are each independently substituted or unsubstituted aryl groups and Z is a polycyclic arylene group, wherein at least one of the Ar′ groups is a haloaryl group. Devices using polymers prepared from the halogenated compound exhibit improved performance and longer lifetime, presumably as a result of the presence of the geometrically constrained diarylaminopolycyclic aromatic groups in the polymer backbone.